import math
def solve():
    X=int(input())
    print(math.ceil((2000-X)/200))
if __name__=="__main__":
    solve() import math math def solve():
    X=int(input())
    print(math.ceil((2000-X)/200)) solve X=int(input()) X int(input()) int input() input print(math.ceil((2000-X)/200)) print math.ceil((2000-X)/200) math.ceil math ceil (2000-X)/200 2000-X 2000 X 200 if __name__=="__main__":
    solve() __name__=="__main__" __name__ "__main__" solve() solve def solve():
    X=int(input())
    print(math.ceil((2000-X)/200)) def solve():
    X=int(input())
    print(math.ceil((2000-X)/200)) solve
import math
def solve():
    X=int(input())
    print(math.ceil((2000-X)/200))
if __name__=="__main__":
    solve()